I like the girl and the last one a lot...good characters and line flow.
Just keep em coming. And don´t forget to do some studies. It really helps also for comic style. You get a better feeling for exaggeration and you achieve a sense for more detail with fewer lines...if thats understandable

In terms of crits, you might consider doin' some life drawing (or even just some serious people-watching), and work a bit on stance. Exaggerated is great, but seems like some of your stances are more plausible than others -- for instance, Shinoda's looks cool... Bourdon & Delson's look a little awkward...